Bowman's Capsule?

Question

Once the blood leaves the Bowman's capsule it has already been filtered...Why do the tubules reabsorb the filtered fluid?

Answer 1

So that you can reabsorb the nutrients (mainly sodium) that has filtered through the capsule. Bowman's capsule is a very gross filter; ions and even larger molecules such as glucose can pass through it. You don't want to lose these molecules, that is why they are reabsorped, as is most of the water.

Answer 2

Well, think about it. If everything except proteins enters the nephrons, we would lose all of the glucose, Na+, water, etc. from filtration. All that we really want to lose is nitrogenous wastes (Urea). Thus the prox. conv. tubule is responsible for reabsorbing Na+, water, amino acids, etc. The loop of henle is designed to set up an osmoconcentration gradient in juxtamedullary nephrons to aide in water reabsorption. The distal tubule and collecting duct is again designed to reabsorb water and Na+.

Answer 3

It's the best strategy to eliminate wastes.

Throw everything out
and then
Take back what you need

Hence the tubules reabsorb glucose, salts and water back and let all the other stuff run out to the bladder.

Answer 4

Tubular reabsorbtion is needed because the filtration in Bowmans's capsule is not very selective.Along with the waste products,useful products are also filtered,which id not absorbed will be thrown away.

Answer 5

to maintain water balance in the body. if the fluid was excreted then water loss would be high. to maintain osmotic balance so that cells do not lose water to compensate for the fluid loss. tubules also absorb solutes such as electrolytes to maintain osmotic pressure

Answer 6

It has been filtered, but not concentrated, also sodium and chloride re-absorption occurs in the tubules.

Answer 7

Which of the following is not part of the filtrate entering Bowman's capsule? a. water, salt, and electrolytes b. glucose c. urea d. plasma proteins*** they are too big and should stay in circulation as serum albumin! e. amino acids --which is the correct pathway for the passge of urine in vertebrates? ***a. collecting tubule>ureter>bladder>urethra b. renal vein>renal ureter>bladder>urethra c. nephron>urethra>bladder>ureter d. cortex>medulla>bladder>ureter e. renal pelvis>medulla>bladder>urethra --Aldosterone a. is a hormone that stimulates thirst b. is secreted by the adrenal glands in response to a high osmolarity of the blood c. stimulates the active reabsorption of Na+ in the distal tubules*** d. causes diuresis e. is converted from a blood protein by the action of renin --the process of reabsorption in the formation of urine insures that a. excess hydrogen ions are removed from the blood b. durgs and other poisons are removed from the blood c. urine is always hyperosmotic to interstitial fluid d. glucose, salts, and water are returned to the blood** e. pH is maintained with a balance of hydrogen ions

Answer 8

so that more amount of the urine to be filtered is reducd